INT WINAPI DECLSPEC_HOTPATCH ResolveLocaleName( const WCHAR *locale, WCHAR *buffer, INT cchLocaleName )
{
    WCHAR name[LOCALE_NAME_MAX_LENGTH];

    if (locale == LOCALE_NAME_USER_DEFAULT) return GetUserDefaultLocaleName( buffer, cchLocaleName );

    lstrcpynW( name, locale, LOCALE_NAME_MAX_LENGTH );

    for (;;)
    {
        WCHAR neutral[3];
        WCHAR* p;
        LCID lcid = LocaleNameToLCID( name, LOCALE_ALLOW_NEUTRAL_NAMES );

        if (lcid != LOCALE_CUSTOM_UNSPECIFIED && lcid > 0 && GetLocaleInfoEx( name, LOCALE_INEUTRAL, neutral, 3 ) == 2)
        {
            if (neutral[ 0 ] == '1')
            {
                /* Attempt to get default locale from neutral locale */
                lcid = MAKELCID( MAKELANGID(lcid,  SUBLANG_DEFAULT), SORT_DEFAULT );

                return GetLocaleInfoW( lcid, LOCALE_SNAME, buffer, cchLocaleName );
            }
            else
            {
                /* Found a valid non-neutral locale */
                int len = lstrlenW( name ) + 1u;

                if (buffer && cchLocaleName < len )
                {
                    SetLastError( ERROR_INSUFFICIENT_BUFFER );
                    return 0;
                }
                if (buffer) lstrcpynW( buffer, name, len );

                return len;
            }
        }


        if (p = wcsrchr( name, L'_' ))
        {
            *p = 0;
            continue;
        }
        else
        {
            /* Not dealing with modifiers; check for & remove script e.g. en-Latn-IE -> en-IE */
            int delim = 0;
            for (p = name; *p != 0; ++p) if ( *p == L'-' ) ++delim;
            if ( delim == 2)
            {
                wchar_t* from;
                wchar_t* to;

                from = wcsrchr( name, L'-' ) + 1;
                to = wcschr( name, L'-' ) + 1;
                while (*from != 0) *(to++) = *(from++);
                *to = 0;
                continue;
            }
            else if (((p = wcsrchr( name, L'-' ))))
            {
                *p = 0;
                continue;
            }
            break;
        }
    }
    return 0;
}